释义 |
Definition of andradite in English: andraditenounˈandrədʌɪtˈandrəˌdīt mass nounA mineral of the garnet group, containing calcium and iron. It occurs as yellow, green, brown, or black crystals, sometimes of gem quality. Example sentencesExamples - The skarns also contain hornblende, calcite, pyroxene, tremolite, pyrrhotite, molybdenite, galena, chalcopyrite, arsenopyrite, garnet (probably andradite or grossular), and pyrite.
- The third major find in recent years is green andradite, some of which may be considered demantoid.
- The crystals have a typical pseudo-octahedral habit, often with composite crystal faces, and are typically associated with red andradite, hematite, calcite, gaudefroyite, barite. kutnohorite, celestine, or even sturmanite.
- The portion of the skarn where the rainbow garnets are found is essentially a coarse-grained aggregate of pure andradite.
- In the introduction to the garnet group, the various distinct species such as pyrope, almandite, grossularite, andradite, and spessartite are referred to as varieties.
Origin Mid 19th century: named after J. B. de Andrada e Silva (circa1763–1838), Brazilian geologist, + -ite1. Definition of andradite in US English: andraditenounˈandrəˌdīt A mineral of the garnet group, containing calcium and iron. It occurs as yellow, green, brown, or black crystals, sometimes of gem quality. Example sentencesExamples - In the introduction to the garnet group, the various distinct species such as pyrope, almandite, grossularite, andradite, and spessartite are referred to as varieties.
- The portion of the skarn where the rainbow garnets are found is essentially a coarse-grained aggregate of pure andradite.
- The third major find in recent years is green andradite, some of which may be considered demantoid.
- The crystals have a typical pseudo-octahedral habit, often with composite crystal faces, and are typically associated with red andradite, hematite, calcite, gaudefroyite, barite. kutnohorite, celestine, or even sturmanite.
- The skarns also contain hornblende, calcite, pyroxene, tremolite, pyrrhotite, molybdenite, galena, chalcopyrite, arsenopyrite, garnet (probably andradite or grossular), and pyrite.
Origin Mid 19th century: named after J. B. de Andrada e Silva ( c 1763–1838), Brazilian geologist, + -ite. |